Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are supplied, so the description carries the full behavioral burden. "Runs the same code the tool page runs" conveys nothing actionable about auth, rate limits, or failure modes; the only real disclosure is that results relate to ASN and network ownership, which is thin for a tool with zero annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

Very short, but the second sentence ("Runs the same code the tool page runs") is filler that consumes a third of the definition without informing tool selection. The content is fragmented rather than front-loaded with a clear verb-resource statement.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With no annotations and no output schema, the description is the only source of behavioral and return-value information, and it provides almost none. An agent cannot tell what fields come back or how this differs from the many other IP/DNS/WHOIS siblings.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and the single parameter already documents accepted inputs (IP address, ASN, or prefix), so the schema does the heavy lifting. The description's only parameter-relevant content, "Scope: ip," is narrower than and inconsistent with the schema wording rather than adding clarity.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description is a noun phrase ("ASN and network owner") with no verb, essentially restating the tool name check_asn. It hints at the returned data but never says it performs a lookup, and with siblings like check_ip, check_whois, and check_reverse_ip in the list, there is no differentiation of what this one does that the others don't.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

"Scope: ip" is the only usage signal, and it is an unexplained fragment that arguably conflicts with the schema, which accepts "IP address, ASN, or prefix." Nothing tells the agent when to pick this over check_ip or check_whois, and there are no exclusions or prerequisites.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.